what is the equation matlab uses to calculate slope in the gradient function

Question

Stuart 2014-7-31

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/144259-what-is-the-equation-matlab-uses-to-calculate-slope-in-the-gradient-function

回答： Gilbert@12345 2017-8-2

When using the command: [ASPECT, SLOPE, gradN, gradE] = gradientm(Z, R)

what is the equation that MATLAB uses to calculate the SLOPE?

If one uses the HELP for the gradient command, the help shows the definition (equations) of the calculation that is performed. This would be helpful for gradientm as well.

The HELP for the gradientm command does not provide this info.

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

Eric 2014-7-31

Due to the nature of the problem, I think the reason there's no simple equation for gradientm is that no simple equation exists. Your best bet may be to look at the code within gradientm.m.

-Eric

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Gilbert@12345 2017-8-2

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/144259-what-is-the-equation-matlab-uses-to-calculate-slope-in-the-gradient-function#answer_276432

Please read page 287 of Matlab recipes for Earth Sciences

https://books.google.fr/books?id=-8q5BgAAQBAJ&pg=PA287&lpg=PA287&dq=matlab+gradientm&source=bl&ots=-EUpZv2jv6&sig=CnW5MRIAlNh6XlFsLUscMipvXBM&hl=fr&sa=X&ved=0ahUKEwioy8-rgrjVAhVCxRQKHaC5AygQ6AEIQjAD#v=onepage&q=matlab%20gradientm&f=false